The Hamilton Jazzmaster Performer Autochrono 42mm (reference H36616140) is a sport-chic timepiece featuring a 42mm stainless steel case and a dark blue dial. Powered by the H-31 automatic chronograph movement, it offers a 60-hour power reserve. The watch includes chronograph, date, and tachymeter functions, and is water-resistant up to 100 meters. It comes with a stainless steel bracelet and a butterfly clasp. (hamiltonwatch.com)